地下黑漆一片?加上爆石的灰尘?能见度低之又低?照明全凭头盔上一只小油灯。

地下黑漆一片?加上爆石的灰尘?能见度低之又低?照明全凭头盔上一只小油灯。的英文翻译

基本释义

• Back then there was no electric lamps installed, a tiny oil lamp on their helmet was the only light source.